Best AI Red Teaming CompaniesAn independent guide to AI red teaming vendors

Compare vendors / NCC Group

NCC Group

Security consultancy with AI/ML red teaming and AI readiness work

Human-led engagementsCompliance mapping

NCC Group runs AI/ML red teaming against the OWASP AI/ML and LLM Top 10, plus threat modeling, bias and toxicity assessment, and cloud reviews for model inversion and model stealing. Its AI readiness service covers ISO/IEC 42001, NIST AI RMF and the EU AI Act. A June 2024 datasheet describes its Models-As-Threat-Actors method and maps tests to MITRE ATLAS.

Best for: Regulated buyers who need red teaming and compliance readiness from one CREST firm.

Public (LSE: NCC); in a UK takeover offer period since Jul 2025

  • ✓ Maps to OWASP
  • ✓ Maps to MITRE ATLAS
  • ✓ Maps to the EU AI Act
  • – SOC 2 or ISO 27001
Visit NCC Group

Facts checked November 9, 2026 against the sources listed below. NCC Group does not pay to appear here.

1 Legal nameNCC Group plc
2 HeadquartersNot disclosed
3 FoundedNot disclosed
4 TeamNot disclosed
5 What they testLLM apps, Prompt injection and jailbreaks, Bias and harms, Data leakage, Foundation models
6 FrameworksOWASP LLM Top 10, MITRE ATLAS, NIST AI RMF, EU AI Act, ISO/IEC 42001, OWASP ML Top 10, Models-As-Threat-Actors (MATA) method
7 CertificationsCREST member company
8 Published pricesNot disclosed
9 Customers and partnersNot disclosed

Where we recommend them

Worth knowing before you sign

  • In a UK Takeover Code offer period since Jul 2025, with no offeror named, and selling businesses.
  • No named AI testing clients or case studies on its AI services page.
  • The MITRE ATLAS mapping comes from a 2024 datasheet; the current page does not name it.

Go to NCC Group's site

Sources

  1. Vendor: AI security services
  2. Vendor: AI security testing datasheet (2024)
  3. CREST: member listing
  4. Takeover Panel disclosure (via Stockopedia)

Work at NCC Group? Send corrections with a source to editors@bestairedteamingcompanies.com. We fix verified errors within five business days.

Compare with

  • Mindgard AI red teaming firm: human-led tests plus an automated platform
  • Gray Swan AI AI security lab: agent red teaming, lab evals and the Arena
  • HiddenLayer AI security platform with automated red teaming and model scanning
  • Trail of Bits Security research consultancy with an AI/ML assurance practice
  • Pillar Security Agent security platform with agentic red teaming